摘要:
A wired circuit board includes an insulating base layer, a conductive pattern formed on the insulating base layer and including a wire and a terminal portion, an insulating cover layer formed on the insulating base layer and having an opening portion to expose the terminal portion, and a metal thin film including a protecting portion interposed between the wire and the insulating cover layer, and an exposed portion formed continuously from the protecting portion on a peripheral end portion of the terminal portion exposed from the opening portion.
摘要:
A wired circuit board includes an insulating base layer, a conductive pattern formed on the insulating base layer and including a wire and a terminal portion, an insulating cover layer formed on the insulating base layer and having an opening portion to expose the terminal portion, and a metal thin film including a protecting portion interposed between the wire and the insulating cover layer, and an exposed portion formed continuously from the protecting portion on a peripheral end portion of the terminal portion exposed from the opening portion.
摘要:
A wired circuit board has an insulating layer and a conductive pattern formed on the insulating layer and made of a copper alloy in which silver is diffused, wherein a content ratio of the silver contained in the copper alloy is more than 0.50% by weight and not more than 3.00% by weight
摘要:
A wired circuit board includes: a first insulating layer; a conductive pattern formed on the first insulating layer and having a terminal portion; and a second insulating layer formed on the first insulating layer to cover the conductive pattern. A surface of the terminal portion is formed to be exposed from the first insulating layer and the second insulating layer. A tin alloy layer is formed at least on a top surface and both side surfaces of the terminal portion.
摘要:
A wired circuit board includes an insulating layer, a conductive pattern made of copper formed on the insulating layer and a covering layer made of an alloy of copper and tin to cover the conductive pattern. An existing ratio of tin in the covering layer increases in accordance with a distance from an inner surface adjacent to the conductive pattern toward an outer surface being not adjacent to the conductive pattern. An atomic ratio of copper to tin in the outer surface of the covering layer is more than 3.
摘要:
A wired circuit board comprises a metal supporting board, a metal foil formed on the metal supporting board, a first protecting layer formed on the surface of the metal foil, the first protecting layer is made of tin or a tin alloy, a first insulating layer formed on the metal supporting board to cover the first protecting layer, a conductive pattern formed on the insulating layer, and a second protecting layer formed on the surface of the conductive pattern, the second protecting layer is made of tin or a tin alloy.
摘要:
A first insulating layer is formed on a suspension body, and a write wiring trace is formed on the first insulating layer. A second insulating layer is formed on the first insulating layer so as to cover the wiring trace. A write wiring trace is formed, above the write wiring trace, on the second insulating layer. A ground trace is formed on one side of the write wiring trace at a distance on the second insulating layer. A third insulating layer is formed on the second insulating layer so as to cover the wiring trace and the ground trace. An opening is formed in a region, below the write wiring trace, of the suspension body.
摘要:
A wired circuit board includes an insulating layer, and a first conductive pattern and a second conductive pattern formed on the insulating layer. The first conductive pattern includes a first outer terminal on which a metal plating layer is provided, a first inner terminal to be solder connected, and a first wire which connects the first outer terminal and the first inner terminal. The second conductive pattern includes a second outer terminal to be solder connected, a second inner terminal to be solder connected, and a second wire which connects the second outer terminal and the second inner terminal. The first inner terminal and the second inner terminal are arranged in opposed relation with each other so as to be solder connected to the common electric component and preflux processing is performed thereon, and a metal plating layer is provided on the second wire.
摘要:
Ground traces are formed to sandwich a write wiring trace. Ground walls are formed on the ground traces. A ground cover is formed so as to couple upper ends of the ground walls. Thus, the ground traces, the ground walls and the ground cover are positioned in a region above and on both sides of the write wiring trace to surround the write wiring trace.
摘要:
A wired circuit board includes an insulating base layer, a conductive pattern that is laminated on the insulating base layer, and an insulating cover layer that is laminated on the insulating base layer so as to cover the conductive pattern. The conductive pattern includes, when projected in a laminating direction of the insulating base layer, the conductive pattern, and the insulating cover layer, a terminal portion that is exposed from the insulating base layer and the insulating cover layer. The terminal portion includes an exposed surface that is exposed toward an external terminal side. A protruded portion that protrudes toward the contact direction with the external terminal is formed on the exposed surface.